Replaced low beam relay on 2006 Grand Prix GT, now headlights will not turn off

find the low beam light relays
by law the fog lights can only come on with low beam
using fog lights on high beam is *******

I drive a 07 Grand Prix and the low beams randomly went out. Could not get them to come back on, but all of the other lights worked (inside, parking, and high beams). found a forum online that recommended replacing the fuse/thing at location #35 in the fuse box under the hood. It worked immediately!! Got the part at Advanced Auto parts for $35 dollars.

Hi, the problem can be the relay or the body control module. The thing to do is pull the low beam relay out of the relay box under the hood and swap it wil the high beam relay. If the low beams start working instead of the low beams, buy another relay for the high beams. If there is no change, pull the relay out again and interrogate the relay socket with a 12 volt test light or voltmeter. Connect your test light clip to chassis ground and probe the relay socket. There should be 2 hot terminals in the socket. If not, there is a problem with the fuse box. If you get these 2 hot terminals, move your test light clip to battery positive and probe the other 2 terminals in the socket. With the headlight switch off, there should be one terminal that lights the test light dimly. If not, there is a problem with the wire from the relay to the headlights. If this is OK, next turn the headlights on (low beam setting) and probe the socket again. There should now be 2 terminals that light the test light. If not, there is a problem with the wiring from the body control module, the module itself, or the beam control switch. If you get to this point, you will need to check the signals AT the BCM to determine if the BCM is to blame of the switch. Please get back to me for these additional steps, if you get stuck here.

does that car have ground lights or fog lights it may not be your high beams coming on it may be your regular lights do you manually turn your high beams on or do they come on on there own

Common problem, there is a headlight relay in the power distribution center under the hood that needs changed out.

If high beams work and low beams do not, then it is probably the high/low relay. It is part number 15016745 and has four prongs. To test if your relay has gone bad locate the relay in your fuse box. There will be two of these relays located next to each other. One controls the low beam headlights and the other the cooling fan. Swap the relays and check your low beam headlights. If the low beams work you have a bad relay.

I'm having the same issue. I have changed the bulbs and fuses. I can't find a relay but I don't think that is the issue. Some other people have suggest the Dimmer Control Switch. I am working on that. Please let me know what you find out.

A loose ground wire to the headlight will keep it dim,Or a headlight adjustment will bring the headlight up.If you can have your headlight turned on a garage door or something at night,and then watch as you change your headlights from low beam to high beam which ones are higher.the last thing to verify is that your high beam headlights are not the plastic lens type that turn dull which cuts the light power.

clean the computer lead interface. my buddies car did the same thing, we cleaned the computer leads with a good eletronic spray cleaner and it fixed the problem.